Improvement in sewing-machine



JOHN D. VANDUZER, OF TYRONE, NEW YORK.

Letters Patent No. 82,183, dated September 15, 1868.

IMPROVEMENT IN SEWING-MAGHINE.

Ell-tje rlgehule referat In in ttm ttttt ttent ant mating @im nf tte tame.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN D. VANDUZER, of Tyrone, in the county of Schuyler, and State of New York,

.have invented a new and useful Improvement in Sewing-Machines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the4 same, reference being had tc the annexed drawings, making a. part of this specification, in which- Figure I is a perspective view.

Figure 2, detached view of some of the parts.

Figure 3 is a view of a section of the machine.

Figure 4 is an under side view of the plate.

The letters of reference refer to the same parts in each figure.

The nature of my invention consists in improvements ixrsewng-machines that sew with two threads, one thread from the ordinary spool, and the other from a small spool within a shuttle. The parts are so arranged that the frame may be fastened upon the ordinary stand, and have'all the parts accessible, without removing or turning up the frame, and all the parts are in view, so that they maybe readily cleaned and oiled. Some of the parts are made adjustable, so that the distance the needle moves up` or down may be increased or diminished at will, and the shuttle-way is made separate from the frame, and fastened to it with screws, so that it may be readily adjusted at pleasure.

To enable others skilled in the art to make and use my invention, I will proceed to describe its mode of construction and operation. l

A is the frame. It may be made of cast iron or other metal, cast in one piece, and in the shape represented in fig. l. It may be placed upon a stand, and held by any desirable means.

B is the main shaft. It passes through and is supported by two upright parts of the frame. At onevend is the grooved driving-pulley, at the other is the cam-wheel C.

C is a cam-wheehwith a cam-groove, made so as to impart the proper motion to the arm E. It is provided with a pivot Ain the left-hand side, that nctuates the shuttle-propeller F, as shown in g. 3, also the crank G, and eccentric-wheel H.

D is' a connection, extending from the cam-wheel O to the arm E, as shown in figs. 1 and 3. At the end,

shown in iig.' 3,-it is provided with a roller, that enters the groove in the cam-end. The cam-groove causes the connebtion to move horizontally. One end of this connection is supported by the support I, the other end by the lower end of the arm E, as shown in fig. 1.

E is an arm that actuates the needle-bar. It is pivoted to and supported by the arm J, as shown in fig. I.

The'arm E is slotted, so that theposition of D E may be changed, for the purpose of imparting a greater or less throw to theneedle-bar.

F is the shuttle-propeller. One end is supportedby a pivot in the side of the cam-wheel C, as shown in iig. 3; the other end is supported by the pivot'that drives the shuttle, by lying and sliding upon the edge of the shuttle-way, as shown in the same figure. This end is held down by means of a rib or Hauch, a, that is fastened to the under side of the plate R, as shown in iig. 4.

G is a crank. It is shown in iig. 3. It is fastened to the pivot of the cam-wheel, by which it is turned. The other end is securely fastened to a shaft that is held in line with the shaft B, so that it will turn the shaft the same as the shaft B is turned, and thus cause the eccentric H to be turned in unison with the cam-wheel C.

H is an eccentric-wheel. It is fastened to the shaft, as shown in iig. 3. Its use is to actuate the clothl feeding mechanism,A as shown in g. I.

Ivis a pendulous frame. It is shown in fig. 1. It is held by a pivot, that is fastened to one of the upright parts of the frame A, as shown in fig. 3. The lower ends extend down by the sides of the connection D, with a, pin or bolt passing through them both, to hold the connection iii-proper position, and allow it to move without much friction. l

J is an arm, that supports several parts of the machine. Its shape is representedin iig. 1. The lower end is. fastened to an upright of the frame with a sliding'joint, so that it may be adjusted at will. The other end iSbranched, andv has a cross-piece across each branch, as shown in the ligure. These cross-pieces have mortiscs through them, for the needle-bar and pressing-har, and to it the spring, I), is fastened, as shown in theigure.

K is the needle-bar, of the shape shown. A screw is put through the end of the arrnE into it, so that the arm will raise and lower it, and to the lower end the needle is attached.

L is a pressing-har, of common construction. I

M is a clasp, that surrounds the lower end ot' the needle-bar.` It is provided with a thumb-screw, so that t it may be made to hold the needle firmly within the groove in the lower end of the needle-bar.

i N is a har. One end is made to enter a hole in one of the uprights of the frame. At the same end is an projection, that extends outward and near the eccentric P. This bar has a hole, for a bolt cr screw to pass through it into the lever O. The other end is bent, to surround thc eccentric H. The spring d always holds it within the groove of the eccentric H, asshown in'tigl l.

O is a lever, that is used to feed the cloth along. The upper end is provided with points or teeth, that will penetrate the cloth, and thus be sure to move the'cloth. Thislevcr is held in a vertical position by a screw7 that passes through a mortise and into the projection at the under side of the shuttle-way. Near the lower end ,is a mortise, through which the screw or bolt is fastened that is put through the bar N. The bolt is fitted so that the lever may be raised or lowered at will. j v

P is an eccentric, provided'with a handle, as shown in` Eg. l. yIt is held to the frame by a screw. lts use is to vary the length of stitch by turning it, thus varyingthe distance of motion of the bar N by means ofthe projection impinging against the eccentric P. v

Q is the shuttle-way.` A perspective view is shown in fig. 1, and a top view in fig. 3. 'At the lower edge are projections, forbolting it to the uprights of the frame. The Yholes through the projections are made so Vthat the shuttle-way may he adjusted up or down, at either end or both. The Way for the shnttleis at'the side, and

may be made to suit any kind or 'size of shuttle required. This way is made separate from the other parts of v the machine, so that it maybe made ot" any metal decomposition of metal that will have the least friction or will least wear the shuttle.

R is the plate that the cloth isl placed upon. It is made int any ordinary manner, and Visheld in position by screws being put through it into the top of the nprights of the frame. Itis provided with the 'necessary holes and passages for needle, shuttle, and feeding-apparatus. An' under side view-is represented'in tig. 4. At the under side is a rib or anch, a, that is used to hold down the end of the shuttle-propeller. This rib should be made'ofany goed anti-friction metal.

Having thus fully described my invention, what I claim as new, and desire to'secnre by Letters Patent, is- 1. The arrangement of the cam-wheel C, connection'l), lever E, and pendulons frame I, when constructed and operating substantially as and for the purpose'set forth;

2. The eccentric H, bar N, and pivoted lever O, in combination, when constructed as described, andv arranged to give motion to thecloth, substantiallyas herein set forth. Y

' v i A i JOHN D. VANDUZE'B..

Witnesses JOHN L. LEWIS, CHARLES 'Knrcnum 

